360° Full-Body Relaxation: The inflatable hot tub spa features 108 high-powered massage bubble jets around the bottom, jetting smooth whirlpools to massage the full body while relieving physical and mental fatigue. Besides, the hot tub can accommodate 2-4 persons, so you can enjoy comfortable bathing with your friends or family. Superiorand Comfortable Heating: The round tub is equipped with a newly-upgraded 2240-Watt heater that can provide comfortable and superior heating. It can be heated by a maximum of 104 °F, and the heating rate is 3.6-5.4 °F/ per hour (Test with an ambient temperature of 82.4 °F). Moreover, there exists a dust-proof insulation cover for speeding up heating and keeping it warm. Circulating Water Filtration System and Easy Operation: The filter cartridge can filter sand, debris, and hair while keeping the powerful water circulation and clean function. (Notice: After 168 hours of use, it will remind you to replace the filter cartridge). In addition, there exists an easy-touch control panel on the air pump, allowing you to adjust the temperature, bubbles, and filter easily. Premium Material: The 4-person air-jet spa is crafted with puncture-resistant laminated PVC material (outer) and high-strength PVC material (inner), ensuring superior durability and comfort, and it can retain shape and keep stable even sitting on the sidewall. Besides, it also comes with a PE groundsheet to protect your floor and reduce heat loss. Easy Setup and Multiple Accessories: The inflatable hot tub can be inflated or deflated quickly by using an air pump, and you can learn how to assemble the air pump to the hot tub through the detailed instructions. Furthermore, it features convenient side handles for easy carrying, a cup holder to get cool drinks within reach, an ergonomic headrest to relax your head and neck, and a repair kit for emergency response. 108 massage bubble jets create smooth whirlpools all around to massage full body. Can accommodate up to 4 persons, enjoy bathing time with family or friends. With the 1440-Watt heater, it can keep heating at the temperature of 100-104 °F. The heating rate is 3.6-5.4 °F/ per hour at an ambient temperature of 82.4 °F. The insulation pool cover can speed up heating and prevent dust from falling in. The secure locking buckles can secure the cover in place firmly. The easy-touch control panel allows you to adjust temperatures and functions easily. Made of premium laminated PVC material, puncture-resistant, durable, comfortable. The air pump provides strong power for quick inflation and deflation. With a headrest, relax your neck and head, bathe more comfortably.